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timer_accuracy: generalize, automate, new base API
The old version was running with base-linux only and there was no run script that provided automated execution and evaluation. Ref #1987
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repos/os
69
repos/os/run/timer_accuracy.run
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69
repos/os/run/timer_accuracy.run
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@ -0,0 +1,69 @@
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# build program images
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build { core init drivers/timer test/timer_accuracy }
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# create directory where boot files are written to
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create_boot_directory
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# define XML configuration for init
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install_config {
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<config>
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<parent-provides>
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<service name="ROM"/>
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<service name="RAM"/>
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<service name="IRQ"/>
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<service name="IO_MEM"/>
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<service name="IO_PORT"/>
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<service name="PD"/>
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<service name="RM"/>
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<service name="CPU"/>
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<service name="LOG"/>
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</parent-provides>
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<default-route>
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<any-service><parent/><any-child/></any-service>
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</default-route>
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<start name="timer">
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<resource name="RAM" quantum="1M"/>
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<provides><service name="Timer"/></provides>
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</start>
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<start name="test-timer_accuracy">
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<resource name="RAM" quantum="10M"/>
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</start>
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</config>
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}
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# build boot files from source binaries
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build_boot_image { core ld.lib.so init timer test-timer_accuracy }
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# configure Qemu
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append qemu_args " -m 64 -nographic"
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set err_cnt 0
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set test_timeout 20
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set rounds 9
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# wait for initial tic
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run_genode_until {\[init -> test-timer_accuracy\].*\n} $test_timeout
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set serial_id [output_spawn_id]
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# measure the delays between the following tics
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for {set i 1} {$i <= $rounds} {incr i} {
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set start_time($i) [clock milliseconds]
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run_genode_until {\[init -> test-timer_accuracy\].*\n} $test_timeout $serial_id
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set end_time($i) [clock milliseconds]
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}
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# print results and count errors
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foreach i [lsort [array names start_time]] {
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set class "Good:"
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set test_result [expr $end_time($i) - $start_time($i)]
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set host_result [expr $i * 1000]
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set result_diff [expr abs($test_result - $host_result)]
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if {[expr $result_diff > 500]} {
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set class "Bad: "
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set err_cnt [expr $err_cnt + 1]
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}
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puts "$class round $i, host measured $host_result ms, test measured $test_result ms"
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}
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# check the error count
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if {[expr $err_cnt > 0]} {
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puts "Test failed because of $err_cnt errors"
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exit -1
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}
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@ -1,11 +1,12 @@
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/*
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* \brief Timer accuracy test for Linux
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* \brief Timer accuracy test
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* \author Norman Feske
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* \author Martin Stein
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* \date 2010-03-09
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*/
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/*
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* Copyright (C) 2010-2013 Genode Labs GmbH
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* Copyright (C) 2010-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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@ -13,45 +14,30 @@
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/* Genode includes */
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#include <timer_session/connection.h>
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#include <base/printf.h>
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/* Linux includes */
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#include <linux_syscalls.h>
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#include <sys/time.h>
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inline int lx_gettimeofday(struct timeval *tv, struct timeval *tz)
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{
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return lx_syscall(SYS_gettimeofday, tv, tz);
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}
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#include <base/component.h>
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using namespace Genode;
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int main(int, char **)
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struct Main
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{
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printf("--- timer accuracy test ---\n");
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Timer::Connection timer;
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Signal_handler<Main> timer_handler;
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unsigned duration_us { 0 };
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static Timer::Connection timer;
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static struct timeval old_tv;
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static struct timeval new_tv;
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enum { ROUNDS = 10 };
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for (unsigned i = 0; i < ROUNDS; ++i) {
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printf("Round [%d/%d] - calling msleep for 5 seconds...\n", i + 1, ROUNDS);
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lx_gettimeofday(&old_tv, 0);
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timer.msleep(5*1000);
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lx_gettimeofday(&new_tv, 0);
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printf("old: %ld seconds %ld microseconds\n", old_tv.tv_sec, old_tv.tv_usec);
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printf("new: %ld seconds %ld microseconds\n", new_tv.tv_sec, new_tv.tv_usec);
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printf("diff is about %ld seconds\n", new_tv.tv_sec - old_tv.tv_sec);
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void handle_timer()
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{
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duration_us += 1000 * 1000;
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timer.trigger_once(duration_us);
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log("");
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}
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printf("--- finished timer accuracy test ---\n");
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return 0;
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}
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Main(Env &env) : timer(env), timer_handler(env.ep(), *this, &Main::handle_timer)
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{
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timer.sigh(timer_handler);
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handle_timer();
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}
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};
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void Component::construct(Env &env) { static Main main(env); }
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@ -1,4 +1,3 @@
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TARGET = test-timer_accuracy
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REQUIRES = linux
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SRC_CC = main.cc
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LIBS = base syscall-linux
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LIBS = base
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